Climate at a Glance | Divisional Rankings | National Centers for Environmental Information (NCEI)

Divisional Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska or Hawaii. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Oregon, Climate Division 1

December 1916 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1916 1-Month	-1.17	-0.20	-0.97	42nd Driest	Driest since: 1914	2013
December 1916 1-Month	-1.17	-0.20	-0.97	89th Wettest	Wettest since: 1915	2015
Nov–Dec 1916 2-Month	-0.29	-0.04	-0.25	55th Driest	Driest since: 1914	2013
Nov–Dec 1916 2-Month	-0.29	-0.04	-0.25	76th Wettest	Wettest since: 1915	1973
Oct–Dec 1916 3-Month	-1.00	-0.11	-0.89	22nd Driest	Driest since: 1911	2013
Oct–Dec 1916 3-Month	-1.00	-0.11	-0.89	109th Wettest	Wettest since: 1915	2016
Sep–Dec 1916 4-Month	-0.89	-0.05	-0.84	25th Driest	Driest since: 1908	1976
Sep–Dec 1916 4-Month	-0.89	-0.05	-0.84	106th Wettest	Wettest since: 1915	1973
Aug–Dec 1916 5-Month	-0.58	-0.07	-0.51	36th Driest	Driest since: 1911	1936
	-0.58	-0.07	-0.51	95th Wettest	Wettest since: 1915	1968
	Ties: 1905
Jul–Dec 1916 6-Month	0.29	-0.07	0.36	101st Driest	Driest since: 1915	2018
Jul–Dec 1916 6-Month	0.29	-0.07	0.36	30th Wettest	Wettest since: 1912	1920
Jun–Dec 1916 7-Month	0.34	-0.06	0.40	98th Driest	Driest since: 1915	2018
	0.34	-0.06	0.40	33rd Wettest	Wettest since: 1914	1920
	Ties: 1909
May–Dec 1916 8-Month	0.46	-0.05	0.51	100th Driest	Driest since: 1915	2018
May–Dec 1916 8-Month	0.46	-0.05	0.51	31st Wettest	Wettest since: 1912	1968
Apr–Dec 1916 9-Month	0.43	-0.03	0.46	96th Driest	Driest since: 1915	1938
Apr–Dec 1916 9-Month	0.43	-0.03	0.46	35th Wettest	Wettest since: 1913	1937
Mar–Dec 1916 10-Month	0.92	-0.05	0.97	119th Driest	Driest since: 1915	1992
Mar–Dec 1916 10-Month	0.92	-0.05	0.97	12th Wettest	Wettest since: 1896	1920, 1937
Feb–Dec 1916 11-Month	1.04	-0.04	1.08	124th Driest	Driest since: 1915	2018
Feb–Dec 1916 11-Month	1.04	-0.04	1.08	7th Wettest	Wettest since: 1902	1983
Jan–Dec 1916 12-Month	1.00	-0.04	1.04	124th Driest	Driest since: 1915	1992
Jan–Dec 1916 12-Month	1.00	-0.04	1.04	7th Wettest	Wettest since: 1896	1983
Jul 1915–Dec 1916 18-Month	0.70	-0.04	0.74	122nd Driest	Driest since: 1915	1992
Jul 1915–Dec 1916 18-Month	0.70	-0.04	0.74	8th Wettest	Wettest to Date	1983, 1996
Jan 1915–Dec 1916 24-Month	0.36	-0.04	0.40	102nd Driest	Driest since: 1915	1930
Jan 1915–Dec 1916 24-Month	0.36	-0.04	0.40	28th Wettest	Wettest since: 1913	1984
Jan 1914–Dec 1916 36-Month	0.31	-0.03	0.34	109th Driest	Driest since: 1915	1930
Jan 1914–Dec 1916 36-Month	0.31	-0.03	0.34	20th Wettest	Wettest since: 1914	1997
Jan 1913–Dec 1916 48-Month	0.25	-0.04	0.29	106th Driest	Driest since: 1915	1926
Jan 1913–Dec 1916 48-Month	0.25	-0.04	0.29	22nd Wettest	Wettest since: 1904	1998
Jan 1912–Dec 1916 60-Month	0.36	-0.04	0.40	117th Driest	Driest since: 1915	1926, 1932
Jan 1912–Dec 1916 60-Month	0.36	-0.04	0.40	10th Wettest	Wettest to Date	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 26, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings

Climate at a Glance Divisional Rankings

Divisional Rankings

Oregon, Climate Division 1

December 1916 Palmer Z-Index Rankings

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